I just ran my Alpha Spyder in the Super Street Volume race at Sebring Full Wet and I noticed 2 errors involving the rain.
1st it was raining on the dashboard under the front windscreen at all times. Rain shouldn’t be falling on the dashboard, especially under the front windscreen, without a wind from behind the car which is just impossible at speed.
2nd everything inside the car was getting “wet” at speed. This largely should not be happening. In the Mythbusters episode Car VS Rain (Season 7 episode 11) the Mythbusters tested the interior of a convertible in the rain at different speeds. Basically 60+ mph the interior should stay pretty dry due to airflow in combination with the speed of the car.
I get the second point would be extremely hard to accurately put into the game at all however, to me, the first is a glaring bug and thus I am reporting it. I have yet to test it on any other convertible or open top car or on any other track when raining.